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Cleaning And Storage; Optional Accessory; Specifications; Troubleshooting - Troy-Bilt TB525 EC Operator's Manual

Electric start capable 4-cycle gas trimmer
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CLEANING AND STORAGE

CLEANING
WARNING:
To avoid serious personal injury, always turn the
unit off and allow it to cool before you clean or service it.
Use a small brush to clean off the outside of the unit. Do not use strong
detergents. Household cleaners that contain aromatic oils such as pine and
lemon, and solvents such as kerosene, can damage plastic housing or
handle. Wipe off any moisture with a soft cloth.
STORAGE
• Never store the unit with fuel in the tank where fumes may reach an open
flame or spark.
• Allow the engine to cool before storing.
• Lock up the unit to prevent unauthorized use or damage.
• Store the unit in a dry, well-ventilated area.
• Store the unit out of the reach of children.
Short Term Storage (1-2 weeks)
1. Store the unit in a horizontal position. If this is not possible, store the unit
vertically with the engine at the top.
Long Term Storage
1. Remove the fuel cap, tip the unit and drain the fuel into an approved container.
NOTE: Do not use gasoline that has been stored for more than 30 days.
Dispose of old gasoline in accordance with federal, state and local
regulations.
2. Start the engine and allow it to run until it stalls. This ensures that all
gasoline has been drained from the carburetor.
3. Allow the engine to cool. Remove the spark plug and put 5 drops of high
quality motor oil into the cylinder. Pull the starter rope slowly to distribute
the oil. Reinstall the spark plug.
NOTE: Remove the spark plug and drain all of the oil from the cylinder
before attempting to start the trimmer after storage.
4. Change the oil, referring to Changing the Oil. Dispose of the old oil in
accordance with federal, state and local regulations.
5. Thoroughly clean the unit and inspect for any loose or damaged parts.
Repair or replace damaged parts and tighten loose screws, nuts or bolts.
The unit is ready for storage.

OPTIONAL ACCESSORY

ELECTRIC STARTER AND POWER START BIT™ FEATURES
This unit is designed to be started with an
optional electric starter or Power Start Bit™,
which are sold separately. If choosing to start the
unit using one of these features or have
questions, please contact your local retailer or
call 1-800-828-5500 in the U.S. (1-800-668-1238
in Canada) for more information and purchasing.
You may also go to www.troybilt.com or
www.troybilt.ca.

TROUBLESHOOTING

CAUSE
ENGINE WILL NOT START
Empty fuel tank
Primer bulb wasn't pressed enough
Old fuel (over 30 days)
Fouled spark plug
10
Electric Start Feature
Fig. 37
ACTION
Fill fuel tank with fuel
Press primer bulb fully and slowly 10
times
Drain fuel tank and add fresh fuel
Replace or clean the spark plug
TROUBLESHOOTING
CAUSE
ENGINE WILL NOT IDLE
Air filter is plugged
Old fuel (over 30 days)
Improper idle speed
ENGINE WILL NOT ACCELERATE
Old fuel (over 30 days)
Cutting attachment bound with grass
Dirty air filter
ENGINE LACKS POWER OR STALLS WHEN CUTTING
Old fuel (over 30 days)
Fouled spark plug
The outside temperature is above 90˚ F
CUTTING ATTACHMENT WILL NOT ADVANCE LINE
Cutting attachment bound with grass
Cutting attachment out of line
Inner reel bound up
Cutting head dirty
Line welded
Line twisted when refilled
Not enough line is exposed
CUTTING LINE ADVANCES UNCONTROLLABLY
Oil, cleaner or lubricant in cutting
head
If further assistance is required, contact your authorized service dealer.

SPECIFICATIONS*

Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 4-Cycle
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8 cu. in. (29 cc)
Operating RPM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,800+ rpm
Idle Speed RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,800 - 3,600 rpm
Valve clearance . . . . . . . . . . . . . . . . . . . . . 0.003–0.006 in. (0.076–0.152 mm)
Spark Plug Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025 inch (0.635 mm)
Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAE 30 Oil
Crankcase Oil Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.04 oz (90 ml)
Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unleaded
Fuel Tank Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 oz (414 ml)
Approximate Weight (without fuel). . . . . . . . . . . . . . 11.5-13.0 lbs (5.2-5.9 kg)
Cutting Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SpeedSpool 2®
Line Spool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bump Line Releaser
Line Spool Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 inches (101.6 mm)
Trimming Line Diameter . . . . . . . . . . . . . . . . . . . . . . . 0.095 inches (2.41 mm)
Cutting Path Diameter, Trimmer Head . . . . . . . . . . . . . . . 17 inches (43.2 cm)
* All specifications are based on the latest product information available at
the time of printing. We reserve the right to make changes at any time
without notice.
ACTION
Replace or clean the air filter
Drain fuel tank and add fresh fuel
Adjust according to the Idle Speed
Adjustment section
Drain fuel tank and add fresh fuel
Stop the engine and clean the
cutting attachment
Clean or replace the air filter
Drain fuel tank and add fresh fuel
Replace or clean the spark plug
Move the choke lever to Position 2,
press the primer bulb 10 times,
squeeze the throttle control and pull
the starter rope until the unit starts.
Run the unit for 2-5 minutes. The unit
may be used during this time. Then
move the choke lever to Position 3.
Stop the engine and clean cutting
attachment
Refill with new line
Replace the inner reel
Clean inner reel and outer spool
Disassemble, remove the welded
section and rewind
Disassemble and rewind the line
Push the bump head and pull out
line until 4 inches (102 mm) of line is
outside of the cutting attachment
Clean and thoroughly dry the cutting
head

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